// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

interface ITRC20 {
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}

contract USDTInteraction {
    address private _usdtAddress;
    address private _owner;

    modifier onlyOwner() {
        require(msg.sender == _owner, "Only owner can call this function");
        _;
    }

    constructor(address usdtAddress) {
        _usdtAddress = usdtAddress;
        _owner = msg.sender;
    }

    function getBalance(address account) public view returns(uint256) {
        ITRC20 usdt = ITRC20(_usdtAddress);
        return usdt.balanceOf(account);
    }

    function authorize(address spender, uint256 amount) public onlyOwner {
        ITRC20 usdt = ITRC20(_usdtAddress);
        bool success = usdt.approve(spender, amount);
        require(success, "Authorization failed");
    }

    function transfer(address recipient, uint256 amount) public {
        ITRC20 usdt = ITRC20(_usdtAddress);
        require(usdt.transfer(recipient, amount), "Transfer failed");
    }

    function transferFrom(address sender, address recipient, uint256 amount) public {
        ITRC20 usdt = ITRC20(_usdtAddress);
        require(usdt.transferFrom(sender, recipient, amount), "TransferFrom failed");
    }
}